Masonry line block



FIG. 1 is a perspective view of the masonry line block;

FIG. 2 is a top plan view, the bottom plan view being a mirror image thereof;

FIG. 3 is a right side view, the left side view being a mirror image thereof;

FIG. 4 is a front end view thereof; and,

FIG. 5 is a back end view thereof. 

I claim the ornamental design for a masonry line block, as shown. 